//out:../css/
.main {
    width: 100%;

    .course {
        display: flex;
        width: 1200px;
        height: 278px;
        border-bottom: 1px solid rgba(228, 231, 235, 1);

        .item-oc {
            text-align: center;
            width: 300px;
            height: 278px;
            padding-top: 60px;

            img {
                width: 120px;
                height: 120px;
            }

            h3 {
                font-size: 24px;
                font-weight: 400;
                margin-top: 30px;
                letter-spacing: 0px;
                line-height: 28.13px;
                color: rgba(51, 51, 51, 1);
            }

            &.active {
                border-bottom: 4px solid rgba(24, 66, 182, 1);
            }
        }
    }

    .teachlist {
        width: 1200px;
        margin-top: 20px;

        .item-teach {
            display: none;
            // display: flex;
            width: 1200px;
            height: 1300px;
            // background: palegoldenrod;
            &.active {
                display: block;
            }
            li {
                display: flex;
                margin-bottom: 20px;
                width: 1200px;
                height: 244px;
                border-radius: 20px;
                // background: palegreen;
                background: rgba(247, 249, 250, 1);

                .li-left {
                    width: 164px;
                    height: 164px;
                    border-radius: 50%;
                    padding: 40px 50px 40px 50px;
                }

                .li-right {
                    width: 886px;
                    // background: lightcoral;

                    span {
                        // background: wheat;
                        display: flex;
                        margin-top: 40px;
                        font-size: 22px;
                        font-weight: 400;
                        letter-spacing: 0px;
                        line-height: 25.78px;
                        color: rgba(51, 51, 51, 1);
                        text-align: left;
                        h4{
                            padding-left: 20px;
                            font-size: 16px;
                            font-weight: 400;
                            letter-spacing: 0px;
                            line-height: 25.78px;
                            color: rgba(102, 102, 102, 1);
                            
                        }
                    }
                    
                    p{
                        height: 96px;
                        margin-top: 20px;
                        font-size: 16px;
                        font-weight: 400;
                        letter-spacing: 0px;
                        line-height: 24px;
                        color: rgba(51, 51, 51, 1);
                    }
                }
            }
        }
    }
}